Question

A function follows the rule y = -75 - 5x. When the function's output is 25, the equation is 25 = -75 - 5x. What is the function input when the output is 25?

Answer 1

Answer:

ill make it short

-20 is the answere

Step-by-step explanation:

Answer 2

Answer:

The function input is -20 when the output is 25

Step-by-step explanation:

we have

$y=-75-5x$

where

y is the dependent variable or output

x is the independent variable or input

If the output is 25

then

y=25

substitute

$25=-75-5x$

Solve for the function input is the same that solve for x

Isolate the variable x

Adds 5x both sides

$25+5x=-75-5x+5x$

$25+5x=-75$

subtract 25 both sides

$25+5x-25=-75-25$

$5x=-100$

Divide by 5 both sides

$x=-20$

therefore

The function input is -20 when the output is 25